$ git clone -n https://src.fedoraproject.org/rpms/osmo.git /var/lib/mock/f41-build-side-1-3128522-39567/root/chroot_tmpdir/scmroot/osmo
Cloning into '/var/lib/mock/f41-build-side-1-3128522-39567/root/chroot_tmpdir/scmroot/osmo'...
$ git fetch origin e91acb51ea4c0368e36cdb14225772b0123b5f96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/osmo
 * [new ref]         e91acb51ea4c0368e36cdb14225772b0123b5f96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e91acb5 convert GPLv2+ license to SPDX